Furnace.



A. O. GUTSOH.

FURNACE.

APPLICATION FILED HOV. 18,1912.

Patented Nov. 4, 1913.

1 $75 mwwm ALFRED O. GUTSGH, 0F SHEBOYAN, WISCONSIN.-

summon.

Specification of Letters Patent.

Patented Nov. 4, 1913 Application filed November 18, 1912. Serial No.732,106.

To all whom it may concern Be it known that I, ALFRED O. GUTSGH, acitizen of the United States, and resident of Sheboygan, in thecountyyof Sheboygan and State of Wisconsin, have im'entcd certain newand useful Improvements in Furnaces; and I do hereby declare that thefollowing is a full, clear, and exact description thereof.

My invention refers to furnaces and particularly to steam generatingfurnaces applicable either to stationary or portable boilers, its objectbeing to provide a simple, economical and efiicient means foreconomically utilizing soft coal primarily as a fuel. whereby greateconomy in the utilization of the heat units thereof is bad.

Another object of my inventionis to provide means for consuming all ofthe waste products of combustion, whereby smoke nuisance is avoided.

\Vith the above and other minor objects in view the invention consistsin what is herein described and claimed with reference to theaccompanying drawing.

The drawing illustrates in diagram a sectional elevation with partsbroken away of a furnace embodying the features of my invention.

Referring by characters to the drawing 1 represents the shell of aboiler having frontand rear walls or tube sheets 2, 2, which areconnected by the usual flues 3, the same establishing communicationbetween the combustion chamber 4 and a rear mixing charm her 5 thatincases the rear tube sheet and is provided with a valve-controlledstack 6 of ordinary construction. The front tube sheet 2 forms one wallof the combustion chamber 6, which chamber is provided with the usualfire pot and grate 7, together with an ashpit 8 and a draft door 9 thatis located within the front wall of the combustion chamber. This frontwall is also provided with a fuel door 10, all of which above mechanismforms no part of my invention.

Located within the combustion chamber 6 above the fire-pot thereof is agenerating retort 11 having a sectional. dumping bottom 12 and a fuelfeed door-controlled opening 13. Leading from the generating retort tothe rear chamber 5 is discharge pipe 14 that is suitably disposed withinthe boiler and through which gases from said retort are adapted totravel and be discharged within the chamber aforesaid. I also provide acombustion retort 15 that is suitably disposed within the boiler belowits flues as shown, This combustion retort 15 communicates with the rearchamber 5 through a receiving pipe 15, the opposite end of saidcombustion retort being providechwith a nozzle 1.6 that extends into thecombustion chamber 4 and is preferably directed' toward the fronttube-sheet 2. The combustion retort 15 has a pipe 14 extending therein,which pipe is adapted to discharge forwardly and toward the combustionchamber 1 and communicates with a discharge mouth of a fan 17, thesuction mouth of which fan is connected to the steamdome 1 of the boilerby a pipe 17 that has a valve-controlled branch 18 for the introductionof air, whereby a. mixture of steam and air may be drawn into the fanand discharged therefrom, into the combustion retort, in the directionasindicated by the arrow. The combustion retort is also provided with afuel pipe 19 that is adapted to conduct volatile fluids such asgasolene, crude oil, or the like from a supply pipe 19', the admissionof this supply to the retort being under control of a suitable valve20..

The gas discharge pipe 14, which directs the gases from the. generatingretort to the rear chamber 5 is, as illustrated, shown'as having a gaspurifier 21 inserted therein, the same being provided for the purpose ofutilizing any well-known method of dry distillation, whereby the thatpass from said generating retort may, if desired, be purified ofexplosives. lt 1S apparent however that I may inter-pose suitablepurifying apparatus for the gases in any convenient position between thegenerating retort and combustion retort, without departing from thespirit of my invention. v

In starting the steam generator the generating retort is first suppliedwith soft coal, there being a small supply of coal also placed withinthe fire-pot 4 and when the fuel is ignited the gases-from the retortare caused to travel through the'pipe l tintothe chamber 5 and fromthence into the combustion retort. At this point steam and air arecaused to commingle with the gases in the form of a blast, which blastis gen- 7 erated from the fan 17. The gases in the generating retort arethen ignited by flashes of gaso-lene or crude oil and owing to the factthat these gases are quite hot and in a.

nascent state they will ignite and burn by the addition of thesuperheated steam and air before mentioned, the said steam beingsuperheated through its contact with the hot gases. Thus it will be seenthat the ignited gases Within the generating retort are caused to bedischarged through the nozzle 16 so as to direct the flame through thefire tubes. By adding fresh air at certain points in the circulatingsystem it is apparent that the gases are oxidized continually.

In starting the furnace the valve Within the stack 6 is opened and afterthe soft coal within th generating retorthas beendeprived of its gasesthe sectional. bottom of said retort will be opened, whereby theremaining product, namely coke, Will be caused to drop into the furnacewhere it serves as a fuel. Thereafter this operation is repeated theproducts of combustion being circulated from front to rear and the softcoal is supplied in quantities to the generating retort in proportion tothe consumption.

lVhile I have shown and described my invention in connection with astationary boiler it is apparent that any form or boiler may be utiiizedand that the apparatus may be economically applied to locomotives, minrine boilers, or for any purpose 'Where'coal is utilized for generatingheat.

I claim:

1. In a furnace, its shell having a forwardly grated bottom combustionchamber and rear chamber connected thereto by flees; the combination ofa generator retort disposed. above the grated bottom of the combustion.chamber, pipe connection bc-- tween the generating retort and rearfurrow/res chamber, a combustion retort in communication with said rearchamber and combustion chamber, means for admitting a mixture of: airand steam to said combustion retort, and means for supplying'gaseousfluid to theaio'resaid combustion retort.

3. In a furnace having a forwardly disposed combustion chamber, arearward chamber, and fines connecting the forward combustion chamberand rearward chamber; the combination of a generating retort disposedwithin the combustion chamber, the generating retort being provided Witha shifta'ble bottom, a pipe in communication with the generating retortand rear chamber, a combustion retort in communication with the rearchamber and combustion chamber, means for admitting air and steam to thecombustion retort, means for superheating the steam, and means foradmit-ting gaseous fluid to said combustion retort.

In testimony that I claim the foregoing I have hereunto set in hand atSeattle in the county of King and State of Washington in the presence oftwo Witnesses.

ALFRED O. GUTSCH. lVitnes-ses F. T. WHEELER, GEO. PARKER.

